Gravel pack particles containing mud filter cake dissolving materials

Patent metadata

Field	Value
Publication number	US-2023167721-A1
Application number	US-202318097800-A
Country	US
Kind code	A1
Filing date	Jan 17, 2023
Priority date	Jan 29, 2019
Publication date	Jun 1, 2023
Grant date	—

Abstract

A gravel pack containing a substrate particle coated with an inducibly degradable and a porous particle having an internal interconnected porosity that is at least partially infused with an inducer material for dissolving of a layer of filter cake disposed between the gravel pack and a subterranean formation.

First claim

What is claimed is:

1 . A gravel pack particle, comprising:
a substrate particle; and a filter cake breaker coated on the substrate particle, the filter cake breaker selected from the group consisting of esters, aliphatic polyesters, ortho esters, poly (ortho esters), ortho ethers, poly (ortho ethers), lactides, poly(lactides), glycolides, poly(glycolides), lactones, hydroxybutyrates, poly(hydroxybutyrates), anhydrides, poly(anhydrides), polyascorbic acids, aliphatic carbonates, aliphatic polycarbonates, amino acids, poly(amino acids), ethylene oxide, poly(ethylene oxide), polyphosphazenes, and combinations thereof.

2 . The gravel pack particle of claim 1 , wherein the substrate particle is a porous substrate and the filter cake breaker is at least partially disposed into a porosity of the porous substrate.

3 . The gravel pack particle of claim 1 , wherein the filter cake breaker is selected from the group consisting of poly (ortho esters), poly (ortho ethers), poly(lactides), poly(glycolides), poly(hydroxybutyrates), poly(anhydrides), polyascorbic acids, aliphatic polycarbonates, poly(amino acids), poly(ethylene oxide), polyphosphazenes, and combinations thereof.

4 . The gravel pack particle of claim 1 , wherein the filter cake breaker is selected from the group consisting of polyascorbic acids, poly(amino acids), and combinations thereof.

5 . The gravel pack particle of claim 1 , wherein the filter cake breaker is an acid selected from the group consisting of citric acid, oleic acid, tartaric acid, stearic acid, linoleic acid, linolenic acid, aromatic dicarboxylic acids, oxalic acid, malonic acid, succinic acid, glutaric acid, glutamic acid, boric acid, adipic acid, a diacid, a triacid, and a tetraacid, and combinations thereof.

6 . The gravel pack particle of claim 5 , wherein the filter cake breaker is an acid selected from the group consisting of methylglycinediacetic acid (MGDA), ethylenediaminetetraacetic acid (EDTA), hydroxyl-ethylenediaminetetraacetic acid (HEDTA), and combinations thereof.

7 . The gravel pack particle of claim 1 , wherein the filter cake breaker is an alcohol can be any alcohol having at least 8 carbon atoms.

8 . The gravel pack particle of claim 1 , wherein the substrate particle is selected from the group consisting of ceramic proppant, diatomaceous earth, walnut hulls, glass beads, sand, plastic beads, and combinations thereof.

9 . The gravel pack particle of claim 2 , wherein the porous substrate comprises an internal interconnected porosity of about 10% to about 70%.

10 . The gravel pack particle of claim 1 , further comprising a polymeric coating coated onto the substrate particle.

11 . The gravel pack particle of claim 10 , wherein the filter cake breaker is mixed with the polymeric coating.

12 . A gravel pack composition, comprising:
a plurality of gravel pack particles comprising a first portion and a second portion, wherein the first portion comprises:
a first substrate particle; and
a filter cake breaker coated on the first substrate particle, and
wherein the second portion comprises:
a second substrate particle; and
an inducer coated on the second substrate particle.

13 . The gravel pack composition of claim 12 , wherein the first substrate particle and the second substrate particle are independently selected from the group consisting of ceramic proppant, diatomaceous earth, walnut hulls, glass beads, sand, and plastic beads.

14 . The gravel pack composition of claim 12 , wherein the first substrate particle and the second substrate particle each comprise a porous substrate having an internal interconnected porosity of about 10% to about 70%.

15 . The gravel pack composition of claim 12 , wherein the filter cake breaker is selected from the group consisting of polyascorbic acids, poly(amino acids), and combinations thereof.

16 . The gravel pack composition of claim 12 , wherein the filter cake breaker is an acid selected from the group consisting of citric acid, oleic acid, tartaric acid, stearic acid, linoleic acid, linolenic acid, aromatic dicarboxylic acids, oxalic acid, malonic acid, succinic acid, glutaric acid, glutamic acid, boric acid, adipic acid, a diacid, a triacid, and a tetraacid, and combinations thereof.

17 . The gravel pack composition of claim 16 , wherein the filter cake breaker is an acid selected from the group consisting of methylglycinediacetic acid (MGDA), ethylenediaminetetraacetic acid (EDTA), hydroxyl-ethylenediaminetetraacetic acid (HEDTA), and combinations thereof.

18 . The gravel pack composition of claim 12 , wherein the filter cake breaker is an alcohol can be any alcohol having at least 8 carbon atoms.

19 . The gravel pack composition of claim 12 , wherein the inducer comprises sulfur dioxide, brine, sulfonic acid, or combination(s) thereof.

20 . The gravel pack composition of claim 12 , further comprising a polymeric coating coated onto the first substrate particle, wherein the filter cake breaker is mixed with the polymeric coating.

Assignees

• Carbo Ceramics Inc

Inventors

• Palisch Terrence
• Leasure Joshua
• Roper Todd
• Lopez Nicolas

Classifications

• C09K8/56

  Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof (compositions for plastering borehole walls C09K8/50; {Soil-conditioning materials or soil-stabilising materials in general C09K17/00}) · CPC title

• E21B43/04 Primary

  Gravelling of wells · CPC title

• C09K2208/26

  Gel breakers other than bacteria or enzymes · CPC title

• E21B33/1208

  characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence) · CPC title

• C09K8/536

  characterised by their form or by the form of their components, e.g. encapsulated material · CPC title